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Proteome-wide association studies identify biochemical modules associated with a wing-size phenotype in Drosophila melanogaster.

  • Okada H Institute of Molecular Systems Biology, ETH Zurich, Wolfgang Pauli Strasse 16, Zürich 8093, Switzerland.
  • Ebhardt HA Institute of Molecular Systems Biology, ETH Zurich, Wolfgang Pauli Strasse 16, Zürich 8093, Switzerland.
  • Vonesch SC Institute of Molecular Systems Biology, ETH Zurich, Wolfgang Pauli Strasse 16, Zürich 8093, Switzerland.
  • Aebersold R Institute of Molecular Systems Biology, ETH Zurich, Wolfgang Pauli Strasse 16, Zürich 8093, Switzerland.
  • Hafen E Institute of Molecular Systems Biology, ETH Zurich, Wolfgang Pauli Strasse 16, Zürich 8093, Switzerland.
  • 2016-09-02
Published in:
  • Nature communications. - 2016
Animals
Drosophila Proteins
Drosophila melanogaster
Genetic Variation
Genome-Wide Association Study
Glucose
Imaginal Discs
Mitochondria
Wings, Animal
English The manner by which genetic diversity within a population generates individual phenotypes is a fundamental question of biology. To advance the understanding of the genotype-phenotype relationships towards the level of biochemical processes, we perform a proteome-wide association study (PWAS) of a complex quantitative phenotype. We quantify the variation of wing imaginal disc proteomes in Drosophila genetic reference panel (DGRP) lines using SWATH mass spectrometry. In spite of the very large genetic variation (1/36 bp) between the lines, proteome variability is surprisingly small, indicating strong molecular resilience of protein expression patterns. Proteins associated with adult wing size form tight co-variation clusters that are enriched in fundamental biochemical processes. Wing size correlates with some basic metabolic functions, positively with glucose metabolism but negatively with mitochondrial respiration and not with ribosome biogenesis. Our study highlights the power of PWAS to filter functional variants from the large genetic variability in natural populations.
Language
  • English
Open access status
gold
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Persistent URL
https://sonar.ch/global/documents/293397
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